I have learned a few things about these cars in the course of doing research for the book. They definitely began life as Reading cars, built by Harlan & Hollingsworth of Wilmington DE. I have some leads on sources of further info on the cars, and may be able to find more info on their original construction. It will be several months before I can get the opportunity to do this research. IF I can get the info, I hope to create a package of info to present to a manufacturer of HO kits to see if he is interested in doing a kit for the car. If he's not interested in doing the AC&Y car, he may still be interested in doing the original RDG version. This would give us the basic car, which could be built with modified sides to represent the AC&Y car. THIS WOULD NOT BE A SHAKE-THE-BOX KIT. One problem is the trucks, which are a very unusual design. As far as I can tell, they have never been available in model form.I'm wondering if I can get an idea how many AC&Y HO modelers might be interested in buying such a kit. By the way, the kit price would probably be somewhere between $50 and $100 (subject to change). If interested, contact me at tomdav404@gmail.com

You've nailed the biggest problem: the trucks. Gotta look at this analytically. As far as I've been able to determine, these trucks were only used on RDG cars (and, of course, cars that were sold by the RDG to other RR's). It's my opinion that if the trucks are going to be produced, it will only happen if the RDG car is produced, simply because the market would be so limited. Whether the trucks would be available separately is an entirely different question, which I certainly can't answer at this time.

One more shot. These wooden cars may have been built the same time that the Reading cars were. I believe the PWV cars with these trucks were purchased by the Wabash Pittsburgh Terminal new. The PWV in 1951 only shows 2 remaining cars of this design. One coach and a combine that looked nothing like the AC&Y cars. They both had the unusual trucks.

I agree (without checking other photos & drawings) that the car looks like a PRR P70, and the trucks have a similar outboard bearing surface above the spring cluster, but the actual truck itself is shaped a bit differently. If this type of truck were available, it might make a decent stand-in. But as far as I can tell, neither the RDG design nor this P&WV design is or ever has been available in model form. So the search continues.